KaleidaGraph includes a function that will find the area under the curve. With the data window active, choose Macros > Integrate – Area. A dialog will prompt for the X and Y columns of data. A second dialog will prompt for the X min, X max, and a Y ref value (baseline). The results are then displayed in a dialog.
KaleidaGraph is a thoughtfully designed graphing and data analysis application for research scientists, as well as for those in business and engineering fields. It produces publication-quality graphs, and easily converts the most complex data into a functional display.